Re: [PATCH Part1 RFC v4 05/36] x86/sev: Define the Linux specific guest termination reasons
From: Borislav Petkov <bp@alien8.de>
Date: 2021-08-10 21:51:56
Also in:
kvm, linux-coco, linux-efi, linux-mm, lkml, platform-driver-x86
On Tue, Aug 10, 2021 at 02:30:44PM -0500, Tom Lendacky wrote:
IIRC, during the review of the first GHCB version there was discussion about assigning reason sets outside of 0 within the spec and the overall feeling was to not do that as part of the spec. We can re-open that discussion for the next version of the GHCB document.
My worry is that if nothing documents which sets are allocated to which
vendor, it'll become a mess.
Imagine a Linux SNP guest and a windoze one, both running on a KVM
hypervisor (is that even possible?) and both using the same termination
reason set with conflicting reason numbers.
Unneeded confusion.
Unless the spec says, "reason set 1 is allocated to Linux, set 2 to
windoze, etc"
Then all know which is which.
And so on...
Thx.
--
Regards/Gruss,
Boris.
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